Added link to Weblate from translatable strings once the translator mode

is activated in the workspace settings. This required the addition of a
new lib (in source form) for a SipHash implementation.

src/com/gpl/rpg/atcontentstudio/utils/HashUtils.java

@@ -0,0 +1,60 @@
+package com.gpl.rpg.atcontentstudio.utils;
+
+import java.io.UnsupportedEncodingException;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import com.zackehh.siphash.SipHash;
+import com.zackehh.siphash.SipHashResult;
+
+public class HashUtils {
+
+	private static final String WEBLATE_SIPASH_KEY = "Weblate Sip Hash";
+	
+	private static final Map<String, SipHash> HASHER_CACHE =  new LinkedHashMap<String, SipHash>();
+	
+	public static String weblateHash(String str, String ctx) {
+		
+		byte[] data = null;
+		
+		if (str != null) {
+			byte[] strBytes;
+			try {
+				strBytes = str.getBytes("UTF-8");
+				byte[] ctxBytes = ctx.getBytes("UTF-8");
+				data = new byte[strBytes.length + ctxBytes.length];
+				System.arraycopy(strBytes, 0, data, 0, strBytes.length);
+				System.arraycopy(ctxBytes, 0, data, strBytes.length, ctxBytes.length);
+			} catch (UnsupportedEncodingException e) {
+				e.printStackTrace();
+			}
+			
+		} else {
+			try {
+				data = ctx.getBytes("UTF-8");
+			} catch (UnsupportedEncodingException e) {
+				e.printStackTrace();
+			}
+		}
+		
+		return siphash(WEBLATE_SIPASH_KEY, data);
+	}
+	
+	private static String siphash(String key, byte[] data) {
+		SipHash hasher = HASHER_CACHE.get(key); 
+		if (hasher == null) {
+			hasher= new SipHash("Weblate Sip Hash".getBytes());
+			HASHER_CACHE.put(key, hasher);
+		}
+		
+		if (data != null) {
+			SipHashResult result = hasher.hash(data);
+			return result.getHex();
+		}
+		
+		
+		return null;
+		
+	}
+	
+}